#include<stdio.h>
int main()
{int sum_day(int month,int day);
 int leap(int year);
 int leap(int year);
 int year,month,day,days;
 printf("input date(year,month,day):");
 scanf("%d,%d,%d",&year,&month,&day);
 printf("%d/%d/%d",year,month,day);
 days=sum_day(month,day);
 if(leap(year)&&month>=3)
   days=days+1;
   printf("is the %dth day in this year.\n",days);
   return 0;
 }

 int sum_day(int month,int day)
 {int day_tab[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};
  int i;
  for(i=1;i<month;i++)
      day+=day_tab[i];
      return(day);
  }

  int leap(int year)
  {int leap;
   leap=year%4==0&&year%100!=0||year%400==0;
   return(leap);
   }
